Fire-proof floor



(No Model.)

J. JAMETON.

' FIRE moor FLOOR.

No. 361,361. Patented Apr. 19, 1887.

In VMLtaT': I

FFICE.

PATENT JEAN JAMETON, on ST. LOUIS, MISSOURI.

FIRE-PROOF FLOOR.

SPECIFICATION forming part of Letters Patent No. 361,361, dated April 19, 1887.

Application filed August 23,1886. Serial No. 211.612. (No model.)

To CLZZ whom it may concern.-

Be it known that I, JEAN JAMEION, of St. Louis, Missouri, have made a new and useful Improvement in Fire-Proof Floors, of which the following is a full, clear, and exact description. 1

The leading feature of my improved floor is the brace-hooks used between the main beams, serving both to brace and tie the main beams, and also to support concrete, earthy matter, or other fire-proof material between the main beams, as well as any auxiliary bars, strips, or pieces employed to more effectually holdin place the fire-proof material.

In the annexed drawing, making part of this specification and illustrating the most desirable mode of carrying outthe improvement, a portion of a floor embodying the improvement is exhibited in perspective, parts being broken awayv to exhibit more clearly the interior of the construction. I

A A represent the main beams of the floor. They are constructed and are arranged in the ordinary manner.

B B represent the brace-hooks. They are shaped and attached to the main beams as follows: The middle portion, 1), of the hook extends between the main beams, at each end resting upon the lower flange, a, of the beam, and preferably against the web a of the beam. The bar constituting thehook is then extended from its resting place upon the beam-flange a upward against the top flange, a of the beam, thence over, and preferably so as to bear upon, the top of the beam, and at its extreme and it is turned down to form a point, I), which catches against the farther side of the top of the beamthat is, it is desirable for the hook to come to a bearing both upon the lower flange and also upon the top of the beam. I, however, desire not to be particularly restricted to such a construction, it being possible to carry out the improvement in a measure by allowing the hook to bear at each of its ends upon a single one only of the underneath bearings named.

The hooks are in practice placed about four feet apart upon the beams; and as it is customary in floors having beams A, such as here shown, to space the beams some four or five feet apart, I prefer to employ the longitudinal bars 0 in connection with the hooks, as thereby the fire-proof material D is better held in position. The bars 0 are arranged crosswise upon the hooks, and are held in place by resting them upon the' hooks and inclosing them in the fire-proof material, which should also be extended toinclose the hooks beneath, substantially as is represented.

The material D is preferably, to lighten the floor, not filled in to the level of the top of the beams A, saving that I consider it a desirable practice to carry it well up to such level in the immediate vicinity of the beam, and also to extend it over the beam, as at d, to form shoulders for the sleepers E, used to support the flooring-boards 'F, substantially as shown.

In addition to being a fire-proof construction, the present floor has superior strength and elasticity-qualities much needed in large buildings, in which a sudden shock frequently causes a slight movement of the columns and walls as hitherto constructed, resulting in cracks, but which in buildings embodying the present improvement are largely obviated.

I am aware that heretofore a hook has been provided in devices of this sort which has its 

